Improvement in windmills



` `"Hurrah STATES PATENT GFFICE.

EDGAR O. LITTLE AND EDWIN D. LITTLE, OF SHABBONAS GROVE, ILLINOIS.

IMPROVEMENT IN WINDMILLS.

Specification' forming part of Letters Patent No. 125,821, dated April 16,1872.

To all whom it may concern:

Beit known that We, EDGAR C. LITTLE and EDWIN l). LITTLE, of Shabbonas Grove, inthe county ot' De Kalb and State of Illinois, have invented a new and valuable Improvement in Vvfiudznills; and we do hereby declare that the ibllowing is a full, clear, and exact description of the construction Iand operation of the saine, reference being had to the annexed dra-W- in g making a part ot' this specification, and to the letters` and iigures ot reference marked thereon.

Figure 1 ot' the drawing is a representation of a vertical section ot' our windmill.

This invention hasrelation to windmills; and consists in the construction and novel arrangement of devices for governing the position ot the sails, according to the pressure ot'the wind, as hereinafter described.

lteterring to the accompanying; drawing, A represents the supports ot' a horizontally-rotating traine. These supports are secured to a ring, n, which tits a. grooved cap, b. Another ring, c', is placed around the supports somewhat lower down, and is encircled b v a collar, b1, connected to the cap b by arms b2. The lower part ot' the collar b1 is hanged at c to prevent displacement ot' parts. The cap b is cast with bearings to receive the wheel-shaft d, and with a socket to hold the arm all ot the vane d2. The wheel is ot' a pentagonal form. E are radial arms inclined tbrward, or dished7 and secured at their inner ends to sockets e ot' a metallic hub, F, secured to the end of the shaft. The sails are composed ot' the oblique slats G secured to mortised bars G', which are hinged to the arms E. The shape ofthe sails is such as to allow'them to lie toward the face of the wheel without touching one another. This result is accomplished by cutting the slats oli toward the edges of the sails obliquely, as clearly shown in the drawing. There are two ot' the bars G to each sail. These two bars are made secure at their ends by U-plates g. Between them run hinge-rods g1. 'H represent-s clamping-blocks, having eacha lug, g2, which enters between the bars G, and is perforated to let the rod g1 pass through. The clampingblocks H are provided with arms h, to which are hinged the rods t'. These rods are hinged at their inner ends to levers fil pivoted to a ring, i2, passing through the arms E near the hub. To the inner ends ot' the levers il are hinged the bent arms K, which pass thence to the rear ofthe hub, and are hinged to a slidingI sleeve, L, encircling the wheel-shaft. The sleeve L is grooved, and holds a collar, L1, to which are attached two rods, L2, also connected to an upright frame, M, which is pivoted to the vane shaft rl. To the upper end of the trarne M is hinged a board or table, N, having an arm, N', through an aperture in which passes the end ot' brace O, hinged at its lower end to the vane.

The wheel is designed to receive the full force 1 ot' the wind toward its face. consequently, in a high wind the pressure and centritugal force turn down the forward edges ofthe sails, and thus present their faces to the direct force of the wind; but in the act of thus turning, the sails, through the `nuediuin ot the connections described, draw the traine M forward so as to depress the board N and present it also to the force ot' the wind. The resultis a counteraction to a sufficient extent ot the effect ot the wind on the face of the wheel by the turning of the edges of the. sail toward it.

In a light Wind the board N is not thrown forward sufficiently to be much affected by its force.

Having described our invention, what we claim, and desire to secure by Letters Patent, 1s-

The collar L1, rods L2, frame M, boards N,

,and brace O, arranged as described, in combination with the sleeve L, hinged sails, and movable connections K 1'? fi, substantially as and for the purpose'specied.

In testimony that they claim the above they have hereunto subscribed their names in the presence of two witnesses.

EDGAR O. LITTLE. EDlVIN D. LITTLE. 

